1# SPDX-License-Identifier: GPL-2.0 2# Hexagon configuration 3comment "Linux Kernel Configuration for Hexagon" 4 5config HEXAGON 6 def_bool y 7 select ARCH_32BIT_OFF_T 8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 9 select ARCH_NO_PREEMPT 10 select ARCH_WANT_FRAME_POINTERS 11 select DMA_GLOBAL_POOL 12 select HAVE_PAGE_SIZE_4KB 13 select HAVE_PAGE_SIZE_16KB 14 select HAVE_PAGE_SIZE_64KB 15 select HAVE_PAGE_SIZE_256KB 16 select FRAME_POINTER 17 # Other pending projects/to-do items. 18 # select HAVE_REGS_AND_STACK_ACCESS_API 19 # select HAVE_HW_BREAKPOINT if PERF_EVENTS 20 # select ARCH_HAS_CPU_IDLE_WAIT 21 # select GPIOLIB 22 # select HAVE_CLK 23 # select GENERIC_PENDING_IRQ if SMP 24 select GENERIC_ATOMIC64 25 select HAVE_PERF_EVENTS 26 # GENERIC_ALLOCATOR is used by dma_alloc_coherent() 27 select GENERIC_ALLOCATOR 28 select GENERIC_IRQ_PROBE 29 select GENERIC_IRQ_SHOW 30 select HAVE_ARCH_KGDB 31 select HAVE_ARCH_TRACEHOOK 32 select NEED_SG_DMA_LENGTH 33 select NO_IOPORT_MAP 34 select GENERIC_IOMAP 35 select GENERIC_IOREMAP 36 select GENERIC_SMP_IDLE_THREAD 37 select STACKTRACE_SUPPORT 38 select GENERIC_CLOCKEVENTS_BROADCAST 39 select LOCK_MM_AND_FIND_VMA 40 select MODULES_USE_ELF_RELA 41 select GENERIC_CPU_DEVICES 42 select ARCH_WANT_LD_ORPHAN_WARN 43 select TRACE_IRQFLAGS_SUPPORT 44 help 45 Qualcomm Hexagon is a processor architecture designed for high 46 performance and low power across a wide variety of applications. 47 48config HEXAGON_PHYS_OFFSET 49 def_bool y 50 help 51 Platforms that don't load the kernel at zero set this. 52 53config LOCKDEP_SUPPORT 54 def_bool y 55 56config EARLY_PRINTK 57 def_bool y 58 59config MMU 60 def_bool y 61 62config GENERIC_CSUM 63 def_bool y 64 65config GENERIC_HWEIGHT 66 def_bool y 67 68config STACKTRACE_SUPPORT 69 def_bool y 70 select STACKTRACE 71 72config GENERIC_BUG 73 def_bool y 74 depends on BUG 75 76menu "Machine selection" 77 78choice 79 prompt "System type" 80 default HEXAGON_COMET 81 82config HEXAGON_COMET 83 bool "Comet Board" 84 help 85 Support for the Comet platform. 86 87endchoice 88 89config HEXAGON_ARCH_VERSION 90 int "Architecture version" 91 default 2 92 93config CMDLINE 94 string "Default kernel command string" 95 default "" 96 help 97 On some platforms, there is currently no way for the boot loader 98 to pass arguments to the kernel. For these, you should supply some 99 command-line options at build time by entering them here. At a 100 minimum, you should specify the memory size and the root device 101 (e.g., mem=64M root=/dev/nfs). 102 103config SMP 104 bool "Multi-Processing support" 105 help 106 Enables SMP support in the kernel. If unsure, say "Y" 107 108config NR_CPUS 109 int "Maximum number of CPUs" if SMP 110 range 2 6 if SMP 111 default "1" if !SMP 112 default "6" if SMP 113 help 114 This allows you to specify the maximum number of CPUs which this 115 kernel will support. The maximum supported value is 6 and the 116 minimum value which makes sense is 2. 117 118 This is purely to save memory - each supported CPU adds 119 approximately eight kilobytes to the kernel image. 120 121source "kernel/Kconfig.hz" 122 123endmenu 124